Klaus Kinski, Rosalba Neri, Jane Garret, Margaret Lee, John Karlsen, Gioia Desideri, Giangiacomo Elia, Monica Strebel, Fernando Cerulli, Giulio Baraghini, Sandro Rossi, Ettore Geri, Antonio Radaelli, Carla Mancini, Franco Marletta
A masked killer stalks an institution for mentally disturbed rich women.